Hi, How can I create a constraint on check in page, on oracle UCM, so that when ever I check in similar, the primary file is compared to the original file (by name and extension may be), just to avoid check in the wrong file. E.g I have check out a document called test.txt, the I check in similar, but by mistake I select test1.txt or test.doc. I want to make sure that such a mistake is noticed and correct. By the way Iam new to UCM, so if you can give some step by step instructions on how to do it, please. Thank you.